[PATCH] adjust handle_IRR_event() return type
Correct the return type of handle_IRQ_event() (inconsistency noticed during
Xen development), and remove redundant declarations. The return type
adjustment required breaking out the definition of irqreturn_t into a
separate header, in order to satisfy current include order dependencies.
Signed-off-by: Jan Beulich <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Russell King <[email protected]>
Cc: Ian Molton <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: William Lee Irwin III <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Miles Bader <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Roman Zippel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/include/linux/irqreturn.h b/include/linux/irqreturn.h
new file mode 100644
index 0000000..881883c
--- /dev/null
+++ b/include/linux/irqreturn.h
@@ -0,0 +1,25 @@
+/* irqreturn.h */
+#ifndef _LINUX_IRQRETURN_H
+#define _LINUX_IRQRETURN_H
+
+/*
+ * For 2.4.x compatibility, 2.4.x can use
+ *
+ * typedef void irqreturn_t;
+ * #define IRQ_NONE
+ * #define IRQ_HANDLED
+ * #define IRQ_RETVAL(x)
+ *
+ * To mix old-style and new-style irq handler returns.
+ *
+ * IRQ_NONE means we didn't handle it.
+ * IRQ_HANDLED means that we did have a valid interrupt and handled it.
+ * IRQ_RETVAL(x) selects on the two depending on x being non-zero (for handled)
+ */
+typedef int irqreturn_t;
+
+#define IRQ_NONE (0)
+#define IRQ_HANDLED (1)
+#define IRQ_RETVAL(x) ((x) != 0)
+
+#endif
